International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 08 Issue: 02 | Feb 2021
p-ISSN: 2395-0072
www.irjet.net
LPG REFRIGERATION SYSTEM WITH ZERO OPERATING COST Akshay Gavatalkar1, Alok Kamad2, Nikhil Chopade3, Sachin Gajar4 1234
Student, Department of Mechanical Engineering, Alard Charitable Trust’s Alard College of Engineering and Management, Affiliated by Savitribai Phule Pune University, Pune, Maharashtra State, India ---------------------------------------------------------------------***--------------------------------------------------------------------convenient for refrigeration in regions having scares in Abstract - Supply of continuous electricity is still not electricity. It works on the principle that during the available in several areas of the country and the world. At such places, this work will be helpful for refrigeration of conversion of LPG into gaseous form, expansion of LPG food, medicines, etc... This paper investigates the result of takes place. Due to this expansion there is a pressure an experimental study carried out to determine the drop and increase in volume of LPG that results in the performance of domestic refrigerators. In this project a new drop of temperature and a refrigerating effect is concept for air- conditioning systems by using Liquefied produced. This refrigerating effect can be used for Petroleum Gas (LPG) is proposed. In this work we have cooling purposes. investigated the performance of a refrigerator by using LPG as refrigerant as LPG is locally available and is easy to transport anywhere. LPG is a byproduct in petroleum refineries and comprises 24.4% propane, 56.4% butane and 17.2% isobutene which have very low boiling point (lower than 0°C). The purpose of using LPG for refrigeration is because it is environment friendly, since it has no ozone depletion potential (ODP =0) and the combustion products of LPG are CO2 and H2O. In this project we have designed and analysed a car ac using LPG as refrigerant. LPG is available in cylinders at high pressure. When this high pressure LPG is passed through a small internal diameter of the capillary tube, the pressure of LPG gets dropped due to expansion and phase change of LPG occurs in an isenthalpic process. Due to phase change from liquid to gas latent heat is gained by the liquid refrigerant and the temperature drops. In this way LPG can produce refrigerating effect for a confined space.
1.1 Problem statement LPG which is stored in storage devices like cylinders at high pressure is extracted. Its pressure and flow rate is controlled by a valve connecting it to the capillary tube at requisite quantity. Evaporator converts it from liquefied state to gaseous state and expands, so it absorbs heat in the form of latent heat due to this process. However heat from the surroundings is absorbed, so a cooling effect is produced. This results in calculating the cooling effects at different flow rates of LPG gas. 1.2 Objectives 1) To identify the form of residual waste in traditional Refrigeration system. 2) Compare the important characteristics between LPG Refrigeration system and traditional refrigeration system. 3) To distinguish between the current existing refrigerator Cost and estimated cost of LPG refrigerator. 4) The performance of existing refrigerator and LPG Refrigerator is to be compared. 5) To determine the cop of refrigerator using LPG as refrigerant
Key Words: Refrigerators, LPG, Refrigerant, petroleum, Capillary tube etc 1. INTRODUCTION
Due to the huge demand of electricity over the world, we think of recovering the energy which is already spent but not being utilized further, to overcome this crisis with less investment. The climatic change and global warming demand accessible and affordable cooling systems in the form of refrigerators and air conditioners. Annually Billions of dollars are spent in serving this purpose. Hence forth, we suggest COST FREE Cooling Systems. Although government agencies are not able to continuously supply a major portion of electricity in both the urban as well as in rural areas. Still the people in these regions require refrigeration for a variety of socially relevant purposes such as cold storage or storing medical supplies and domestic kitchens this project has the novelty of using LPG instead of electricity for refrigeration. This solution is © 2021, IRJET
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Impact Factor value: 7.529
2. Scope
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The future scope of this project is to focus on implementation of the project in the restaurant and community hall for preserving vegetables, dairy products with the refrigeration, where it serves the purpose of preservations.
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